dirty hack until pandas-dev#55271 is closed

Author: dalejung

pandas/tseries/frequencies.py

@@ -5,6 +5,7 @@
 import numpy as np
 
 from pandas._libs import lib
+from pandas.tseries.offsets import MonthBegin
 from pandas._libs.algos import unique_deltas
 from pandas._libs.tslibs import (
     Timestamp,
@@ -504,9 +505,13 @@ def is_superperiod(source, target) -> bool:
     """
     if target is None or source is None:
         return False
+    original_source = to_offset(source)
     source = _maybe_coerce_freq(source)
     target = _maybe_coerce_freq(target)
 
+    if isinstance(original_source, MonthBegin) and target == 'D':
+        return False
+
     if _is_annual(source):
         if _is_annual(target):
             return get_rule_month(source) == get_rule_month(target)